(B) Gas $B$ turns the colour of acidified $K_{2}Cr_{2}O_{7}$ green,thus it is $SO_{2}$. $SO_{2}$ is obtained along with a yellow precipitate of sulfur

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$Na_{2}S_{2}O_{3}, SO_{2}, Cr_{2}(SO_{4})_{3}$

(B) Gas $B$ turns the colour of acidified $K_{2}Cr_{2}O_{7}$ green,thus it is $SO_{2}$. $SO_{2}$ is obtained along with a yellow precipitate of sulfur when thiosulfate is treated with dilute acids. Thus,$A$ is $Na_{2}S_{2}O_{3}$,$B$ is $SO_{2}$,and $C$ is $Cr_{2}(SO_{4})_{3}$.The reactions are as follows:$Na_{2}S_{2}O_{3} + 2HCl \rightarrow 2NaCl + H_{2}O + SO_{2} + S \text{ (yellow precipitate)}$$K_{2}Cr_{2}O_{7} + 3SO_{2} + H_{2}SO_{4} \rightarrow K_{2}SO_{4} + Cr_{2}(SO_{4})_{3} \text{ (green solution)} + H_{2}O$

Class 12 Chemistry Principles Related to Practical Chemistry Wet Test for Acid Radical

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$A$ white crystalline salt $A$ reacts with dilute $HCl$ to liberate a suffocating gas $B$ and also forms a yellow precipitate. The gas $B$ turns potassium dichromate acidified with dilute $H_{2}SO_{4}$ to a green coloured solution $C$. $A$,$B$ and $C$ are respectively

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A
$Na_{2}SO_{3}, SO_{2}, Cr_{2}(SO_{4})_{3}$
B
$Na_{2}S_{2}O_{3}, SO_{2}, Cr_{2}(SO_{4})_{3}$
C
$Na_{2}S_{2}, SO_{2}, Cr_{2}(SO_{4})_{3}$
D
$Na_{2}SO_{4}, SO_{2}, Cr_{2}(SO_{4})_{3}$

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Wet Test for Acid Radical

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Which of the following is correctly matched?

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$M \text{ (Salt)} + \text{Dil. } HCl \xrightarrow{\text{Warm}} N \uparrow + P \downarrow$. Gas $N$ changes the colour of $FeSO_4$ solution into a yellow solution. Then,salt $M$ in the above reaction is:

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$A$ mixture when heated with conc. $H_2SO_4$ and $MnO_2$ produces brown fumes due to the presence of:

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Which of the statement is incorrect for the given paragraph?
Simple salt $\xrightarrow{\text{Flame test}}$ Golden yellow flame
Simple salt $\xrightarrow[MnO_2]{Conc. H_2SO_4} (X)$ Yellowish green gas
Simple salt $\xrightarrow{AgNO_3} (Z)$ White ppt. (Insoluble in dil. $HNO_3$)
Simple salt $\xrightarrow[Conc. H_2SO_4]{K_2Cr_2O_7} (Y)$ Reddish brown vapour

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When $BaCl_{2}$ is added to an aqueous salt solution, a white precipitate is obtained. The anion among $CO_{3}^{2-}$, $SO_{3}^{2-}$, and $SO_{4}^{2-}$ that was present in the solution can be

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$A$ white crystalline salt $A$ reacts with dilute $HCl$ to liberate a suffocating gas $B$ and also forms a yellow precipitate. The gas $B$ turns potassium dichromate acidified with dilute $H_{2}SO_{4}$ to a green coloured solution $C$. $A$,$B$ and $C$ are respectively

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Which of the following is correctly matched?

$M \text{ (Salt)} + \text{Dil. } HCl \xrightarrow{\text{Warm}} N \uparrow + P \downarrow$. Gas $N$ changes the colour of $FeSO_4$ solution into a yellow solution. Then,salt $M$ in the above reaction is:

$A$ mixture when heated with conc. $H_2SO_4$ and $MnO_2$ produces brown fumes due to the presence of:

When $BaCl_{2}$ is added to an aqueous salt solution, a white precipitate is obtained. The anion among $CO_{3}^{2-}$, $SO_{3}^{2-}$, and $SO_{4}^{2-}$ that was present in the solution can be

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